puppeteer-core
Version:
A high-level API to control headless Chrome over the DevTools Protocol
165 lines • 7.96 kB
JavaScript
/**
* Copyright 2022 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
if (kind === "m") throw new TypeError("Private method is not writable");
if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _MutationPoller_fn, _MutationPoller_root, _MutationPoller_observer, _MutationPoller_promise, _RAFPoller_fn, _RAFPoller_promise, _IntervalPoller_fn, _IntervalPoller_ms, _IntervalPoller_interval, _IntervalPoller_promise;
import { assert } from '../util/assert.js';
import { createDeferredPromise, } from '../util/DeferredPromise.js';
/**
* @internal
*/
export class MutationPoller {
constructor(fn, root) {
_MutationPoller_fn.set(this, void 0);
_MutationPoller_root.set(this, void 0);
_MutationPoller_observer.set(this, void 0);
_MutationPoller_promise.set(this, void 0);
__classPrivateFieldSet(this, _MutationPoller_fn, fn, "f");
__classPrivateFieldSet(this, _MutationPoller_root, root, "f");
}
async start() {
const promise = (__classPrivateFieldSet(this, _MutationPoller_promise, createDeferredPromise(), "f"));
const result = await __classPrivateFieldGet(this, _MutationPoller_fn, "f").call(this);
if (result) {
promise.resolve(result);
return;
}
__classPrivateFieldSet(this, _MutationPoller_observer, new MutationObserver(async () => {
const result = await __classPrivateFieldGet(this, _MutationPoller_fn, "f").call(this);
if (!result) {
return;
}
promise.resolve(result);
await this.stop();
}), "f");
__classPrivateFieldGet(this, _MutationPoller_observer, "f").observe(__classPrivateFieldGet(this, _MutationPoller_root, "f"), {
childList: true,
subtree: true,
attributes: true,
});
}
async stop() {
assert(__classPrivateFieldGet(this, _MutationPoller_promise, "f"), 'Polling never started.');
if (!__classPrivateFieldGet(this, _MutationPoller_promise, "f").finished()) {
__classPrivateFieldGet(this, _MutationPoller_promise, "f").reject(new Error('Polling stopped'));
}
if (__classPrivateFieldGet(this, _MutationPoller_observer, "f")) {
__classPrivateFieldGet(this, _MutationPoller_observer, "f").disconnect();
__classPrivateFieldSet(this, _MutationPoller_observer, undefined, "f");
}
}
result() {
assert(__classPrivateFieldGet(this, _MutationPoller_promise, "f"), 'Polling never started.');
return __classPrivateFieldGet(this, _MutationPoller_promise, "f");
}
}
_MutationPoller_fn = new WeakMap(), _MutationPoller_root = new WeakMap(), _MutationPoller_observer = new WeakMap(), _MutationPoller_promise = new WeakMap();
/**
* @internal
*/
export class RAFPoller {
constructor(fn) {
_RAFPoller_fn.set(this, void 0);
_RAFPoller_promise.set(this, void 0);
__classPrivateFieldSet(this, _RAFPoller_fn, fn, "f");
}
async start() {
const promise = (__classPrivateFieldSet(this, _RAFPoller_promise, createDeferredPromise(), "f"));
const result = await __classPrivateFieldGet(this, _RAFPoller_fn, "f").call(this);
if (result) {
promise.resolve(result);
return;
}
const poll = async () => {
if (promise.finished()) {
return;
}
const result = await __classPrivateFieldGet(this, _RAFPoller_fn, "f").call(this);
if (!result) {
window.requestAnimationFrame(poll);
return;
}
promise.resolve(result);
await this.stop();
};
window.requestAnimationFrame(poll);
}
async stop() {
assert(__classPrivateFieldGet(this, _RAFPoller_promise, "f"), 'Polling never started.');
if (!__classPrivateFieldGet(this, _RAFPoller_promise, "f").finished()) {
__classPrivateFieldGet(this, _RAFPoller_promise, "f").reject(new Error('Polling stopped'));
}
}
result() {
assert(__classPrivateFieldGet(this, _RAFPoller_promise, "f"), 'Polling never started.');
return __classPrivateFieldGet(this, _RAFPoller_promise, "f");
}
}
_RAFPoller_fn = new WeakMap(), _RAFPoller_promise = new WeakMap();
/**
* @internal
*/
export class IntervalPoller {
constructor(fn, ms) {
_IntervalPoller_fn.set(this, void 0);
_IntervalPoller_ms.set(this, void 0);
_IntervalPoller_interval.set(this, void 0);
_IntervalPoller_promise.set(this, void 0);
__classPrivateFieldSet(this, _IntervalPoller_fn, fn, "f");
__classPrivateFieldSet(this, _IntervalPoller_ms, ms, "f");
}
async start() {
const promise = (__classPrivateFieldSet(this, _IntervalPoller_promise, createDeferredPromise(), "f"));
const result = await __classPrivateFieldGet(this, _IntervalPoller_fn, "f").call(this);
if (result) {
promise.resolve(result);
return;
}
__classPrivateFieldSet(this, _IntervalPoller_interval, setInterval(async () => {
const result = await __classPrivateFieldGet(this, _IntervalPoller_fn, "f").call(this);
if (!result) {
return;
}
promise.resolve(result);
await this.stop();
}, __classPrivateFieldGet(this, _IntervalPoller_ms, "f")), "f");
}
async stop() {
assert(__classPrivateFieldGet(this, _IntervalPoller_promise, "f"), 'Polling never started.');
if (!__classPrivateFieldGet(this, _IntervalPoller_promise, "f").finished()) {
__classPrivateFieldGet(this, _IntervalPoller_promise, "f").reject(new Error('Polling stopped'));
}
if (__classPrivateFieldGet(this, _IntervalPoller_interval, "f")) {
clearInterval(__classPrivateFieldGet(this, _IntervalPoller_interval, "f"));
__classPrivateFieldSet(this, _IntervalPoller_interval, undefined, "f");
}
}
result() {
assert(__classPrivateFieldGet(this, _IntervalPoller_promise, "f"), 'Polling never started.');
return __classPrivateFieldGet(this, _IntervalPoller_promise, "f");
}
}
_IntervalPoller_fn = new WeakMap(), _IntervalPoller_ms = new WeakMap(), _IntervalPoller_interval = new WeakMap(), _IntervalPoller_promise = new WeakMap();
//# sourceMappingURL=Poller.js.map